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Yamaha Dirt Bike Spark Plug Table

The table includes factory spark plug specs for all of the vintage Enduros the site is focused on. We have also included a number of more modern Yamaha Dirt bikes on the assumption some of you may need this information in a convenient place. Please note these are stock plugs. Your tuning may require and adjustment hotter or colder heat range setting. See information at the bottom of the page for heat range adjustment information.

Yamaha Vintage Dirt Bike Spark Plug Specifications

MODEL

Spark Plug

AT1/1M (ALL)

B8ES

AT2/2M (ALL)

B8ES

AT3/3MX (1973)

B9ES

CT175 (69-73)

B8ES

CT175 (69-73)

B8ES

DT1/1B/1C (68-70)

B8ES

DT100 (1977)

B8ES

DT100 (74-75)

B8HS

DT100 (78-83)

B7ES

DT125 (1976)

B8ES

DT125 (1978)

B8ES

DT125 (74-75)

B8ES

DT125 (79-81)

B8ES

DT175 (1976)

B8ES

DT175 (74-75)

B8ES

DT175 (78-79)

B8ES

DT175 (80-81)

B9ES

DT1E (1971)

B8ES

DT1E/MX (1971)

B8ES

DT2 (1972)

B8ES

DT3 (1973)

B8ES

DT360 (1974)

B8ES

DT400 (1977)

B8ES

DT400 (1978)

B8ES

DT400 (75-76)

B8ES

DT80 (81-83)

B7HS

GT80/MX (73-80)

B7HS

GT80/MX (73-80)

B7HS

IT125 (80-81)

B9EG

IT175 (1982)

B8EG

IT175 (1983)

B8EG

IT175 (77-79)

B9EG

IT175 (80-81)

B9EG

IT200 (84-86)

B8EG

IT250 (1980)

B9EG

IT250 (1983)

B9EG

IT250 (81-82)

B9EG

IT425 (1980)

B8EG

IT465 (81-82)

B8ES

IT490 (83-84)

B8ES

JT1/1L (1971)

B7HS

JT2/2MX (1972)

B7HS

MX100 (74-75)

B7ES

MX100 (79-83)

B7ES

MX175 (74-81)

B8ES

MX250 (73-75)

B8EG

MX360 (73-74)

B9EG

MX80 (80-82)

B7HS

PW50 (81-87,90-08) (Y-Zinger)

BP4HS

RD125 (1975)

B8HS

RD125 (1976)

B8ES

RD200 (1976)

B8ES

RD200 (74-75)

B8HS

RD250 (73-75)

B8HS

RD350 (73-75)

B8HS

RD400 (1979)

B8ES

RD400 (76-78)

B8ES

RD60 (73-75)

B7ES

RS100 (75-76)

B8HS

RT1 (70-71)

B8ES

RT1 (70-71)

B8ES

RT100 (90,92-96)

B7ES

RT100 (97-00)

BR7ES

RT180 (90-93)

B8ES

RT180 (95-98)

B8ES

RT1MX (70-71)

B9EG

RT2 (1972)

B8ES

RT2 (1972)

B8ES

RT3 (1973)

B8ES

TT250 (1980)

BP7ES

TT250 (81-82)

BP7ES

TT350 (86-87)

D8EA

TT500 (1976)

BP7ES

TT500 (77-81)

BP7ES

TT600 (83-84)

D7EA

TT600 (85-86)

DP7EA-9

TY175 (1975)

B9ES

TY175 (76-79)

B7ES

TY250 (74-78)

B7ES

TY350 (1985)

BP6EV

TY350 (1986)

BP6EV

TY80 (74-75)

B6HS

XT200 (82-83)

D8EA

XT225 (01-Current)

DR8EA

XT225 (92-00) (Serow)

DR8EA

XT250 (1984)

D8EA

XT250 (2008)

DR8EA

XT250 (80-83)

BP7ES

XT350 (85-00)

D8EA

XT500 (76-79)

BP7ES

XT500 (80-81)

BP6ES

XT550 (82-83)

D7EA

XT550 (82-83)

D7EA

XT600 (84-89)

DP8EA-9

XT600E (90-95)

DPR8EA-9

YZ100 (76-77)

B10EG

YZ100 (78-79)

B10EG

YZ100 (80-81)

B10EG

YZ100 (82-83)

B9EG

YZ125 (02-04)

BR9EG

YZ125 (07-Current)

BR9EG

YZ125 (1980)

B10EG

YZ125 (1981)

B10EG

YZ125 (1982)

B9EG

YZ125 (1983)

BR9EG

YZ125 (1984)

B9EG

YZ125 (1985)

B9EG

YZ125 (1988)

B9EG

YZ125 (1989)

B9EG

YZ125 (1992)

BR9EG

YZ125 (1993)

BR9EG

YZ125 (1996)

B9EG

YZ125 (1997)

B9EG

YZ125 (2005)

BR9EG

YZ125 (2006)

BR9EG

YZ125 (77-79)

B10EG

YZ125 (86-87)

B9EG

YZ125 (90-91)

B9EG

YZ125 (94-95)

B9EG

YZ125 (98-01)

BR9EG

YZ175 (1976)

B10EG

YZ250 (1974)

B9EG

YZ250 (1975)

B9EG

YZ250 (1976)

B9EG

YZ250 (1977)

B9EG

YZ250 (1980)

B9EG

YZ250 (1981)

B9EG

YZ250 (1982)

B8EG

YZ250 (1983)

BR8EG

YZ250 (1984)

B9EG

YZ250 (1985)

B9EG

YZ250 (1986)

B8EG

YZ250 (1989)

B8EG

YZ250 (1998)

BR8EG

YZ250 (78-79)

B9EG

YZ250 (87-88)

B8EG

YZ250 (90-93)

B8EG

YZ250 (94-95)

B8EG

YZ250 (96-97)

BR8EG

YZ250 (99-Current)

BR8EG

YZ250F (All)

CR8E

YZ250WR (1989)

B8EG

YZ250WR (1990)

B8EG

YZ400 (1979)

B8EG

YZ400 (77-78)

B8EG

YZ400F (98-99)

CR8E

YZ426F (00-02)

CR8E

YZ450F (03-06)

CR8E

YZ450F (06-07)

CR8E

YZ450F (2005)

CR8E

YZ450F (2008-Current)

CR8E

YZ450FSP (2006) (50th Anniv.)

CR8E

YZ465 (1980)

B8ES

YZ465 (1981)

B8ES

YZ490 (1982)

B8ES

YZ490 (83-85)

B8EG

YZ490 (86-90)

B8EG

YZ50 (1980)

B9ES

YZ60 (1981)

B9ES

YZ60 (82-83)

B9ES

YZ80 (00-01)

BR10EG

YZ80 (1974)

B7HS

YZ80 (1975)

B8HS

YZ80 (1976)

B8ES

YZ80 (1977)

B8ES

YZ80 (1978)

B8ES

YZ80 (1979)

B8ES

YZ80 (1980)

B8ES

YZ80 (1981)

B8ES

YZ80 (1982)

B9ES

YZ80 (1983)

BR9ES

YZ80 (84-85)

B9EG

YZ80 (86-92)

B9EG

YZ80 (93-99)

B10EG

YZ85 (02-Current)

BR10EG

NGK Spark Plugs Heat Rating

The spark plug heat range has no relationship to the electrical energy transferred through the spark plug. The heat range of a spark plug is the range in which the plug works well thermally.

The heat rating of each NGK spark plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type.

This site is not affiliated with Yamaha Motor Corporation. The use of the word "Yamaha" or any specific model designation is purely for informational purposes to assist users of this site and in no way indicate any endorsement by or approval of this site by Yamaha Motor Corporation. The word "Yamaha", the tuning fork logo or other trademarked logos and all other product names are, or may be, trademarks or registered trademarks of Yamaha Motor Corporation. All other company and product names are trademarks or registered trademarks of their respective companies.